EIGRP FEATURES

EIGRP FEATURES

EIGRP FEATURES

CISCO PROPRIETARY

Eigrp routing protocol is cisco proprietary  ie it  will work only on the cisco devices.wecant use eigrp on other venders routers

SUPPORT  CIDR AND VLSM

With CIDR, address classes (class A, class B, class C) became meaningless. The network address was no longer determined by the value of the first octet, but assigned prefix length (subnet mask). Address space, the number of hosts on a network, could now be assigned a specific prefix depending upon the number of hosts needed for that network.

CIDR uses VLSM (Variable Length Subnet Masks) to allocate IP addresses to subnetworks according to need rather than by class. VLSM allows for subnets to be further divided or subnetted into even smaller subnets. Simply put, VLSM is just subnetting a subnet.

CONSUMES LESS BANDWIDTH

(no broadcasts, no periodic updates, updates contain only changes)

During normal operation of eigrp sends only hello packets to established  and maintains neighbor.Eigrp does not send periodic routing updates like RIP, when a change occurs  update regarding the affected route is propagated across the network,not the entire routing table.

FAST CONVERGENCE

Eigrp maintain the topology table which stores all the possible path to reach a particular network.by using the dual algorithm eigrp find the best path to reach the network or we can say the path to reach a network with the minimum metric.which is stored in the routing table.In the topology table eigrp maintain a feasible successor (backup path) through feasibility condition.

So whenever our successor went down ,feasible successor take the place of successor.

SECURITY

EIGRP route authentication provides Message Digest 5 (MD5) authentication of routing updates from the EIGRP routing protocol. The MD5 keyed digest in each EIGRP packet prevents the introduction of unauthorized or false routing messages from unapproved sources.